Related Experiment Video
Updated: Sep 26, 2025

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
Design and methods for the training in exercise activities and motion for growth (TEAM 4 growth) trial: A randomized
Linda M Lambert1, Victoria L Pemberton2, Felicia L Trachtenberg3
1Division of Pediatric Cardiothoracic Surgery, University of Utah, Salt Lake City, UT, United States of America.
Insights
Passive range of motion (PROM) may improve growth in infants with hypoplastic left heart syndrome (HLHS) after the Norwood procedure. This trial investigates PROM
Area of Science:
- Pediatric Cardiology
- Neonatal Development
- Clinical Trials
Background:
- Infants with congenital heart disease often experience impaired growth, linked to developmental issues and longer hospital stays.
- While various interventions exist, their success in enhancing growth varies.
- Passive range of motion (PROM) has shown promise in improving somatic growth in preterm infants.
Purpose of the Study:
- To evaluate the efficacy of a 21-day passive range of motion (PROM) exercise program on growth in infants with hypoplastic left heart syndrome (HLHS) post-Norwood procedure.
- To compare growth metrics (weight-, height-, head circumference-for-age z-scores) at 4 months of age or pre-superior cavopulmonary connection evaluation.
- To assess secondary outcomes including neonatal neurobehavior, neurodevelopment, and bone mineral density.
Main Methods:
- A multicenter, Phase III randomized controlled trial comparing PROM exercise to standard care.
- Inclusion criteria: HLHS diagnosis, born at ≥37 weeks gestation, Norwood procedure <30 days old.
- Exclusion criteria: chromosomal abnormalities, transplant listing, or expected discharge within 14 days.
Main Results:
- Data on growth metrics (z-scores) will be collected and compared between groups.
- Secondary outcomes including neurobehavioral patterns, neurodevelopmental assessment, and bone mineral density will be analyzed.
- The study aims to provide robust data on the impact of PROM on these outcomes.
Conclusions:
- The TEAM 4 Growth trial will contribute significantly to understanding PROM's role in growth for infants with complex cardiac anomalies.
- Findings may inform interventions for high-risk infants facing growth failure and developmental concerns.
- This research could enhance long-term outcomes for infants with HLHS.
Background:
Growth is often impaired in infants with congenital heart disease. Poor growth has been associated with worse neurodevelopment, abnormal behavioral state, and longer time to hospital discharge. Nutritional interventions, drug therapy, and surgical palliation have varying degrees of success enhancing growth. Passive range of motion (PROM) improves somatic growth in preterm infants and is safe and feasible in infants with hypoplastic left heart syndrome (HLHS), after their first palliative surgery (Norwood procedure).
Methods:
This multicenter, Phase III randomized control trial of a 21-day PROM exercise or standard of care evaluates growth in infants with HLHS after the Norwood procedure. Growth (weight-, height- and head circumference-for-age z-scores) will be compared at 4 months of age or at the pre-superior cavopulmonary connection evaluation visit, whichever comes first. Secondary outcomes include neonatal neurobehavioral patterns, neurodevelopmental assessment, and bone mineral density. Eligibility include diagnosis of HLHS or other single right ventricle anomaly, birth at ≥37 weeks gestation and Norwood procedure at <30 days of age, and family consent. Infants with known chromosomal or recognizable phenotypic syndromes associated with growth failure, listed for transplant, or expected to be discharged within 14 days of screening are excluded.
Conclusions:
The TEAM 4 Growth trial will make an important contribution to understanding the role of PROM on growth, neurobehavior, neurodevelopment, and BMD in infants with complex cardiac anomalies, who are at high risk for growth failure and developmental concerns.
Related Concept Videos
Randomized Experiments
Simple randomization
Simple...
Group Design
Study Designs in Epidemiology
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...

